package Example;
//定义Animal
class Animal{
    private String name;
    private  int age;
    public  String getName(){
        return  name;
    }
    public  void  setName(String name){
        this.name = name;
    }
    public  int getAge(){
        return age;
    }
    public void  setAge(int age){
        this.age = age;
    }
}
// 定义dog类继承Animal类
class Dog extends Animal{
    //此处不写任何代码
}
//定义测试类
public class si1 {
    public static void main(String[] args) {
        Dog dog = new Dog();
        dog.setName("牧羊犬");
        dog.setAge(3);
        System.out.println("名称："+dog.getName()+",年龄："+dog.getAge() );
    }
}
